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Add a window for heartbeat pings and pongs #34

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Add a window for heartbeat pings and pongs #34

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7 changes: 4 additions & 3 deletions dist/stomp.js
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7 changes: 6 additions & 1 deletion src/stomp.coffee
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Original file line number Diff line number Diff line change
Expand Up @@ -111,6 +111,9 @@ class Client
# (value in ms)
incoming: 10000
}
# Send pings 10% faster and allow pongs 10% slower to account for
# inaccurate timing in the web browser
@heartbeatWindow = 0.10 #10%
# subscription callbacks indexed by subscriber's ID
@subscriptions = {}

Expand All @@ -129,6 +132,7 @@ class Client

unless @heartbeat.outgoing == 0 or serverIncoming == 0
ttl = Math.max(@heartbeat.outgoing, serverIncoming)
ttl = ttl - (ttl * @heartbeatWindow);
@debug? "send PING every #{ttl}ms"
@pinger = window?.setInterval(=>
@ws.send Byte.LF
Expand All @@ -137,6 +141,7 @@ class Client

unless @heartbeat.incoming == 0 or serverOutgoing == 0
ttl = Math.max(@heartbeat.incoming, serverOutgoing)
ttl = ttl + (ttl * @heartbeatWindow)
@debug? "check PONG every #{ttl}ms"
@ponger = window?.setInterval(=>
delta = Date.now() - @serverActivity
Expand Down Expand Up @@ -355,4 +360,4 @@ else if exports?
Stomp.WebSocketClass = require('./test/server.mock.js').StompServerMock
# or in the current object (e.g. a WebWorker)
else
self.Stomp = Stomp
self.Stomp = Stomp